In our work, a photon is a fiber that oscillates in planes perpendicular to its propagation, thus it traces a waveform during translation, but it is not a wave unto itself. Although it is not a spherical particle or wave, it will exhibit wave-particle duality in an interferometer. Photons with shorter oscillation strokes (greater frequency, smaller wavelength) have more energy per Planck. i.e. smallest fiber strokes are from protons. Free photons have smaller frequencies and larger wavelengths because they are not restrained by adjacent photons in subatomic particles.

Article UNVEILING of the ELECTRON (Post #1) [A Proposed Electron Structure]

P.S. The measurable part of such subatomic particles is at its center because this part is impenetrable.

The characteristics of a photon depends only on its energy, i.e. completely independent from its source.

Thank you for your answers so far. I think I'm trying to understand the actual emission process of the photon. As the photon doesn't change after emission but it can't be put back the the same space it came from, that just doesn't fit for me.

I will have to dig a bit deeper in your writing (Preston) and collect information about Thomson precession. As I understand this is a similar idea to a 'singularity-less black hole electron'. ..I did play with space-time earlier and it feels like the right direction. However, I expect that it won't be enough to explain this big difference.

The right answer seems to be that simply if the near field information is lost during emission, the spot size of the far field only beam will be larger.

There are metamaterial lenses "superlens" which is able to use the near field information as well, achieving spot size/resolution much smaller than the half wavelength.